[ncolug] Re: vm
- From: larry <larry@xxxxxxxxxxxx>
- To: ncolug@xxxxxxxxxxxxx
- Date: Fri, 23 Nov 2007 10:49:16 -0500
Yes, it could. Does it?
It could also balance my checkbook.
Chuck Stickelman wrote:
What do you want to trigger it?
The Linux Hypervisor could run the apcd daemon and initiate the shutdown when
the UPS's batteries are low...
Chuck
-----Original Message-----
From: "larry" <larry@xxxxxxxxxxxx>
To: "ncolug@xxxxxxxxxxxxx" <ncolug@xxxxxxxxxxxxx>
Sent: 11/23/2007 9:56 AM
Subject: [ncolug] Re: vm
Very nice. But essentially this is just a shutdown command. What will
trigger it to run?
Jim Willeke wrote:
For VMWare this script should work.
#####################################################################
#!/bin/sh
#
# UPS shutdown script for VMware ESX 3.0
#
#####################################################################
# set the paths that the vmware tools need
PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin"
#####################################################################
# try do a nice shutdown of VM there is power
count_vm_on=0
for vm in `vmware-cmd -l` ; do
#echo "VM: " $vm
for VMstate in `vmware-cmd "$vm" getstate` ; do
#echo $VMstate
# If the VM is power ON
if [ $VMstate = "on" ] ; then
echo " "
echo "VM: " $vm
echo "State: is on and will now tell it to shut down"
echo "Shutting down: " $vm
vmware-cmd "$vm" stop trysoft
vmwarecmd_exitcode=$(expr $?)
if [ $vmwarecmd_exitcode -ne 0 ] ; then
echo "exitcode: $vmwarecmd_exitcode so will now turn it off hard"
vmware-cmd "$vm" stop hard
fi
count_vm_on=$count_vm_on+1
sleep 2
# if the VM is power OFF
elif [ $VMstate = "off" ] ; then
echo " "
echo "VM: " $vm
echo "State: is off, so i skip it"
# if the VM is power suspended
elif [ $VMstate = "suspended" ] ; then
echo " "
echo "VM: " $vm
echo "State: is suspended, so i skip it"
# if state is getstate or =
else
printf ""
#echo "unknown state: " $VMstate
fi
done
done
########################################################################
# wait for up to 5 min for the VM to shutd
#
if [ $count_vm_on = 0 ] ; then
echo " "
echo "All VM is off or suspended"
else
echo " "
vm_time_out=300
count_vm_on=0
echo "Waiting for VMware virtual machines."
for (( second=0; second<$vm_time_out; second=second+5 )); do
sleep 5
printf "."
count_vm_on=0
for vm in `vmware-cmd -l` ; do
for VMstate in `vmware-cmd "$vm" getstate` ; do
if [ $VMstate = "on" ] ; then
count_vm_on=$(expr $count_vm_on + 1)
fi
done
done
if [ $count_vm_on = 0 ] ; then
#echo "exit for"
break
fi
done
#echo $VMstate
fi
#echo $count_vm_on
#####################################################################
# checking if all the VM are off and if not then turn them off
for vm in `vmware-cmd -l` ; do
#echo "VM: " $vm
for VMstate in `vmware-cmd "$vm" getstate` ; do
# If the VM is power ON
if [ $VMstate = "on" ] ; then
echo " "
echo "Found this VM: " $vm
echo "it is stille on but now i will turn it off"
vmware-cmd "$vm" stop hard
sleep 2
fi
done
done
#####################################################################
# Will now shutdown the ESX server as all VM are now off
echo " "
echo "now all VM is down, so will shutdown ESX host now"
echo " "
shutdown -h now
-jim
Phone: 419.564.7692
Email: jim@xxxxxxxxxxx
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larry wrote:
No, the guests do NOT "shut down cleanly" just because you stopped or
shut down the hypervisor.
You want to talk about "standards" in regard to UPS signaling
behaviour?! Which of the dozen or so standards would you like to
discuss?
Mike wrote:
Chuck Stickelman wrote:
So what I hear you say is:
Hook the UPS to the physical machine
Have the host OS monitor the UPS's state
When the UPS signals the host it sends a SIGHUP to the Virtual
Machines
The VMs should then interpret the SIGHUP as a Shutdown command
Is that what you had in mnd?
Does anyone know if that's how it works?
Chuck
Yes.
The signal may depend on the VM design though. I would hope they
have used enough sense to honor some standard.
This really is a near trivial problem. The guests shutdown cleanly
during a normal shutdown, yes? Why should a shutdown instituted by
UPS software or even admin written (monitoring) scripts be any
different?
Mike
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